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inclusions

Gemology Cheat Sheets

…difficult to see under 10X. Eye clean. Minor inclusions, somewhat easy to see with 10X. Usually eye clean. Noticeable inclusions under 10X.…

Gemstone Optical Properties

…Refraction Inside gems, mineral inclusions may act like straws and air bubbles in water. If the inclusions are transparent, how much they stand…

Cutting Star and Cat’s Eye Gems

…is the most common cause of these visual phenomena, any inclusions that reflect light in parallel lines can create these displays, including…